The invention provides a biaxially-oriented polypropylene film that contains a base layer (A) comprising a polypropylene resin as a main component, a surface layer (B) provided at one side of the base layer (A), and a surface layer (C) provided at one side of the base layer (A) opposite to the surface layer (B), wherein the surface layer (B) has a wetting tension of 38 mN or more, a surface resistance value of 14.0 LogΩ or more, an arithmetic average roughness (Ra) of 3.0-5.5 nm, a Martens hardness of 248 N/mm.sup.2 or less, and a center plane average surface roughness (SRa) of 0.010-0.026 .Math.m, and the surface layer (C) has a center plane average surface roughness (SRa) of 0.020 .Math.m or more and a Martens hardness of 270 N/mm.sup.2 or more.

The invention relates to systems and methods for creating wound material portions for incorporation into an article of footwear. More particularly, one method of manufacturing at least a portion of an upper for an article of footwear, in accordance with the invention, includes the steps of providing a support structure, providing a fiber delivery system, tacking a first end of a first fiber onto the support structure, moving the support structure with respect to the fiber delivery system to wind the first fiber around the support structure, cutting a second end of the first fiber upon positioning of the first fiber onto the support structure, and treating at least a portion of the first fiber to fixedly hold it in a wound arrangement and form a fabric layer for incorporation into an article of footwear.

The invention provides a method for pre-curing an adhesive layer bonding a first component to a second component. The adhesive layer is heated by treating an adhesive layer component as heating the first component with a pair of electrodes that are in electrical contact with a surface of the first component, the pair of electrodes applying a predetermined electrical current (I.sub.1, I.sub.2) to the first component. The invention further provides an arrangement for pre-curing a layer of adhesive.

The invention provides a method for pre-curing an adhesive layer bonding a first component to a second component. The adhesive layer is heated by treating an adhesive layer component as heating the first component with a pair of electrodes that are in electrical contact with a surface of the first component, the pair of electrodes applying a predetermined electrical current (I.sub.1, I.sub.2) to the first component. The invention further provides an arrangement for pre-curing a layer of adhesive.

The invention relates to systems and methods for creating wound material portions for incorporation into an article of footwear. More particularly, one method of manufacturing at least a portion of an upper for an article of footwear, in accordance with the invention, includes the steps of providing a support structure, providing a fiber delivery system, tacking a first end of a first fiber onto the support structure, moving the support structure with respect to the fiber delivery system to wind the first fiber around the support structure, cutting a second end of the first fiber upon positioning of the first fiber onto the support structure, and treating at least a portion of the first fiber to fixedly hold it in a wound arrangement and form a fabric layer for incorporation into an article of footwear.

The invention provides a method for pre-curing an adhesive layer bonding a first component to a second component. The adhesive layer is heated by treating an adhesive layer component as heating the first component with a pair of electrodes that are in electrical contact with a surface of the first component, the pair of electrodes applying a predetermined electrical current (I.sub.1, I.sub.2) to the first component. The invention further provides an arrangement for pre-curing a layer of adhesive.

The invention provides a biaxially-oriented polypropylene film that contains a base layer (A) comprising a polypropylene resin as a main component, a surface layer (B) provided at one side of the base layer (A), and a surface layer (C) provided at one side of the base layer (A) opposite to the surface layer (B), wherein the surface layer (B) has a wetting tension of 38 mN or more, a surface resistance value of 14.0 Log or more, an arithmetic average roughness (Ra) of 3.0-5.5 nm, a Martens hardness of 248 N/mm.sup.2 or less, and a center plane average surface roughness (SRa) of 0.010-0.026 m, and the surface layer (C) has a center plane average surface roughness (SRa) of 0.020 m or more and a Martens hardness of 270 N/mm.sup.2 or more.

A process is disclosed for making a layered material comprising a micro- and/or nanostructured layer in a resin, including providing a substrate as a first layer; providing an adhesive sheet comprising at least one layer of nanofibre nonwoven fabric of a solidified resin; at least partially coating the substrate with the adhesive sheet; and heating the assembly comprising the substrate and adhesive sheet for a time interval (t) sufficient to bring the layer of nanofibre nonwoven fabric to a heating temperature (T) sufficient to cause a phase transition of the layer of nanofibre nonwoven fabric, to generate a micro- and/or nanostructure of localized accumulations of thermosetting acrylic resin and/or thermoplastic resin. The layer of nanofibre nonwoven fabric in thermosetting acrylic resin and/or thermoplastic resin of the adhesive sheet is supplemented with at least a plurality of nano-elements in a material different from the resin of the adhesive sheet.

[Object] To provide a pressure-sensitive adhesive tape that has a low volatile component content, has reduced adverse effects on the external environment, can be thermally detached within a short period of time and can prevent thermal damage to the adherend, and allows for easy thermal detachment procedures; an article in which at least two adherends are bonded via the pressure-sensitive adhesive tape; and a method for dismantling the article.

[Solution] A pressure-sensitive adhesive tape including a pressure-sensitive adhesive layer, a heating element, and a melt-softening layer that is adjacent to the heating element at least in this order, in which the melt-softening layer contains a thermoplastic resin having a weight average molecular weight of 80,000 to 150,000 and a tackifying resin having a mass loss rate of 3% or less when heating from 25 C. to 200 C. at a temperature raising rate of 10 C./min in nitrogen.